I just called WL yesterday about an order that I placed a few days ago. According to what I was told, the base liquids are mixed to order, so I'm not sure why they would be showing out of stock on some items and not others. When I ordered mine, they had 24mg and below all in stock. Now they only have 250ml and 500ml in stock of 12mg!
I hope that they get their expansion completed soon. I was really looking forward to working with them. But no matter how nice they are or how good their service is, if they don't have anything in stock that won't help us. LOL